用嗜线虫真菌防治家畜胃肠道线虫病的研究进展

简要论述了嗜线虫真菌种类及其捕捉器官和国内外生物防治家畜胃肠道线虫病的研究进展。国内外防治该病主要是用各种驱虫药物定期驱虫，由此造成寄生虫抗药性、动物组织残留药物、环境污染、线虫反复感染等诸多负作用。用线虫天敌嗜线虫真菌生物防治家畜胃肠道线虫病成为该领域研究的重点课题之一。实验室和野外的大量研究结果证明，嗜线虫真菌在通过动物胃肠道时能不被消化，从而保持活性，在粪便中能有效捕食营自由生活阶段的线虫幼虫，使放牧草场中感染性线虫幼虫明显减少，呈现出良好的生物防治效果。文章重点介绍了嗜线虫真菌Duddingtonia flagrans，对用嗜线虫真菌生物防治家畜胃肠道线虫病的前景充满信心。

Recent Advances in the Biocontrol of Gastrointestinal Nematodes in Livestock with Nematophagous fungi

Nowadays the primary measure for controlling the gastrointestinal nematodes in livestock depends on chemical drugs. Many questions, such as appearance and gain of drug resistance in nematodes, drug residuals in the animal tissues and environmental contamination, have been concerned widely. In recent years a lot of biological properties of many nematode-trapping fungus were studied. The results showed that the fungi culture which fed up to livestock could reduce the number of the infective larvae on the pasture. As a result, the nematode number decreased. Duclditrgtonia fiagrans is introduced emphatically.